MESON Chess Problem Database

Problem Display
PID: 142312 (7K/5p2/3Rb3/2PpkP2/1P4P1/4N3/3B2Q1/8 w - - 0 1)

Pirnie, Duncan

Source?, 1932

(First published on Sun Jan 3 1932)

7K/5p2/3Rb3/2PpkP2/1P4P1/4N3/3B2Q1/8

#2

9 + 4

14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sc4#
  • Tries
    • 1.Sxd5?
      • threat
        • 2.Bc3#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Kd4!
    • 1.Rxe6+?
      • 1...Kd4
        • 2.Qxd5#
      • 1...Kf4
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sc4#
        • 2.Sxd5#
      • 1...fxe6!
  • Keys
    • 1.Qe2!
      • 1...Kd4
        • 2.Sc2#
      • 1...Ke4
        • 2.Sc2#
      • 1...Kf4
        • 2.Sf1#
      • 1...Kf6
        • 2.Sxd5#
      • 1...Bxf5
        • 2.Sxf5#
      • 1...d4
        • 2.Sd5#
      • 1...Bd7
        • 2.Sc2#
      • 1...Bc8
        • 2.Sc2#
      • 1...f6
        • 2.Sc2#

This is a version of 142313

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(A)+S(C)
  • Tries
    • Try
      • S(C);XP(a)
      • Threat
        • B(A)
      • Vars
        • B(c);OGATE,XS(C)::QAR1(B),XB(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(H);CHECK,XB(c)
      • Vars
        • K(b);S_FLIGHT::QAR1(B),XP(a)
      • Refutation
        • P(d);XR(H)
  • Actual
    • Q(B);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::S(C)
      • K(b);P-FLIGHT::QAR(B)+S(C)
      • K(b);S_FLIGHT::B(A)+S(C)
      • K(b);P_SPINB(c),S_FLIGHT::S(C),XP(a)
      • B(c);XP(G)::QAR(B)+S(C),XB(c)
      • P(a);SBLOCK::QAR(B)+S(C)
      • B(c);::QAR(B)+S(C)
      • P(d);SBLOCK::QAR(B)+S(C)
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